Improvement in pipe-cutting machines



- 29 is a. shipper for the purpose of iezniing the belt which is'sccured a friction-pulley that will stop the vthe fi'ont side of the cross-bnr e, and having its exas to allow for the wearing out of the hammer und ljections ou two opposite sides, moving in'correspond- 12, which revolves with the shaft 3, and in so doing pushes the knee 13 upward. 'lhis knee 13 is made tirnl tothe hammer 11 by means ofa screw, as shown on iig. 6, and the hammer will consequently be thrown upward for each revolution of the cam-shaft 3. 'lhe hammer is quickly thrown downward by the com :rcs-- sive and elastic action ofthe egg-shaped rubber-sp ings 14 i414 14.

The rubber-springs i414 i4 i4 are partially inclus-eil in a seinieircnlnr frame, 15, that is lirluly attached to tin` cross-bnr c.

A rod, '16, projeets through the rubber iprings, and isheld in place by the hollow sei-ew i7, and by n. bear- I ing in the upper end ofthe hummer ll.

ity means of lhcahpllnw sert-.w l' can he obtained any desirable pressure ofthe rubber springs onto the i` hammer.

18 is a check-nut for the purpose oi' holding the sere-w 17 from unscrcwing when themaeliine is in inntion.

'lhe chisel 19 is held tirtniyto the hammer hy menus ofthe screw 20 and the wedge 21, in a similar way to common tool-posts on lathe or planinganuchincs.

22 is the face-plate har, movable in bearingsfas I shown in iig. 4. The object of this face-plate bar is to I hold the file firmly ivhen the blow from the hammer is given, and to aecoiA plish thisl make a forked lever, 25, hung on afulcrum, 26, andpressng down the faceplate. bar by means of the hook and pin, asshown atV 27 on iig. 6. n

A suitable weight, 28, yi'szittnehed to the lever 25, of suitable size to press the face-.plate har dorn firmly onto the tile.

from the fast to ,thc loose pulley, or vice versa, andis attached to the rod 30.

',lhis rod has on its extreme end a fratrie, 31, to

tixed pulley 4 as soon as the belt is shipped.

33 is a knob on the end ofthe rod 30, between which andthe frame is a coiled spring for the vpurpose of holding the shipper in its properv position.

The shipper is also made to act automatically bj means of the action of thc pointer 34, fig. 6, onto the adjustable linger' 35, secured tothe sliding carriage h..

A bar, 46, made partly as a segment to encompass treme ends carried out straight, one end to serve asa handle, and thc other end serves as a catch for holding the lower end of the shipper, that extends below the drums, firmly during the operation of th'c machine, is made to move over thc circular part of the cross-bare, and held onto the same bar e by means of screws going through slot-holes in the circular bar 46, and screwed-into the cross-bar e.

When the bar 46 is moved so as to withdraw the catch from the lower part of the shipper, then acts the coiled spring on thc ro'd 30, whereby tho shipper is automatically moved over to the loose pulley. Fig. 4 shows the section of the hammer and faccplate bar and theirrespective guides.

0n tiit figure. `11 isthebsmmer. havingesmpin guides on each side. These guides are adjustable so guides. l

22 is the section of the facefplatc bnr, havingp'roing grooves in the upright frame. j

23, on g. 6, is a projecting bracket on the face' plate bar, and-is made to support a rubber spring, 24, onto which the upper end ot' the hammer will strike in its downward movement, and thus prevent the making of a second cut in one revolution.

The revolving carriage f can be held irmly'to th circular table a by means of dogs 36 36 pressing onto ears 37 37, (in one piece with the carriage f.)

The dogs arc pressed down by means of screws 38 1318 going through the dogsl and screwed 'into the ta. e a.

H 5. The automaticalshipper arrang 4 fing of the circular bar 46, index 36, and adjustable rosso Much objection has been made to machinefcutfiles tig. (i, and is made to more, iu au irregular groove,

the blc-cutting, whereby I obtain amore uneven feed' oi' the sliding carriage, and consequently a more nneven-eut tile.

'ilnarm n' is made to turn around the fuicrum 41, and is lu-ld in the. position shown ou figs. l and 6 by means ofthe locking arrangement shown in tigfG.

This arrangement consists ot a rod, 42, projecting into the hub 4i,and held therchynieans ofthe coiledV spring iii, iig. 6, pressing against tite collar it-on the locking apparatus, and against the bearing 45.

When the rod 42 is withdrawn from the hub 4i the whole can be turned down so as to allow the handle n o to be turned without interference.

'()n tig. 2 is shown a circular bw, 46, concentric with the circular table a. '.lo. this circular bar is secured the automatica] shipper arrangement 34, aslbeforc named. This circular arm connects wit-lr the handle 47, whereby the shipper can be operated independent ot the automaticai feed.

'.ihc object of havingr the shipper-har circular', con centric to the circular table, is so as to insure the ex@ act working of the feed in all positions of the revoirA ing carriage f and the sliding carriage Je.

It is needed on my machine that the chisel thatcnts the tile, and the face-plate lower edge, musi. be right over tite very center of the revolving carriage, whereby any angle may be cut on the tile simplyA by Aturning the revolving carriage suoli an anglo without disturbing the position of the chisel and face-plate bar.

Tile center ofthe pillars c c and the chisel-edge aro laid in one central line for the purpose of swinging ttie revolving carriage the greatest angle possible.

Having thus fullydescribcd the construction and operation of this my invention,

I wish to secure by Letters Patent, and claim- 1. In combination with the` sliding carriage h tho screw l, bevel-gears p and r, the latter' bored ont anjd screw-tlncaded so as to encompass and constitute the nut for the screw-shaft l, and the bearing s on the carriage f, as -fully set forth.

2. The combination, of the weight 28, forked rod 25, fulcrums 26 and 27, with the faceplate bar, for thc purpose of holding1 the face-plate har onto the file in a manner set forth.

3. The combination, of the pointer 39, (attached to the screw 7,) 'arm w provided with an irregular groove, with carriage f, to 'which it is hinged, and tho locking apparatus consisting of the devices 42 43, '44, and 45, substantially as and for the purpose set'ortlr.-

` t 4. In combination with thc frame n, hollow pillars c c,and cross-bar e, the feeding mechanism, as made, with the shaft 3, worm 2, worm-wheel 1, shaft fu,

gears t, 1:,'and az, and adjustable frame i finger 35, in combination with the fork 29, frame 31, and friction-pulley 32, as fully set forth.

6. '1.he projecting b tacket 23 with its spring, attached to the tiweplate bar, movabiein the perforated hammer, in a manner and for the purpose set forth.

PEER JOHAN OARLSSON.

Witnesses: y

ALBAN Asnnnw, .Tous F. NonDGmsT.

ent, consist- 

